The tune from “Despicable Me 2″ runs for a full day, but viewers can hop in and out as they please

Pharrell Williams made an interactive 24-hour music video for his hit song “Happy” from “Despicable Me 2.”

Yes, it’s 24-hours of the same song, though not continuously starring the same actors or setting, mercifully. Plus, the tune with the infectious hook is catchy enough to last — though there probably isn’t any song that has 1,440 minutes of staying power. Even you, Meatloaf.

Fans — or even curious non-fans of the Neptunes and N.E.R.D.S performer — can click here to spend a full day watching “Happy.” Williams performs his own tune every hour on the hour, like clockwork — literally.

Here’s how the user-controlled video works: A corresponding clock face overlays the day-long video. Viewers can choose to watch in “real-time” or choose a different time of day. One can share a favorite specific moment via Facebook or Twitter.

It’s tough to not feel the titular emotion while watching the creative endeavor, where everyone is all smiles from sunrise to … another sunrise. The changing scenes have a pretty natural flow to them, but if you watch long enough, you will likely feel something other than happiness: insanity.